Input sensing device and a display device including the same

Abstract

An input sensing device including: a power line; driving lines; a first signal line including sub-lines; a second signal line connected to the sub-lines; and sensor pixels connected to the power line, the driving lines, and the first signal line, wherein at least one sensor pixel of the sensor pixels includes: an optical sensor that transfers a photoelectrically converted charge from the power line to a first node in response to a driving signal provided through a first driving line of the driving lines; a first transistor connected between the first node and a first sub-line among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line.

What is claimed is: 
     
       1. An input sensing device, comprising:
 a power line; 
 driving lines; 
 a first signal line including sub-lines; 
 a second signal line connected to the sub-limes; and 
 sensor pixels connected to the power line, the driving lines, and the first signal line, 
 wherein at least one sensor pixel of the sensor pixels includes: 
 an optical sensor that transfers a photoelectrically converted charge from the power, line to a first node in response to a driving signal provided through a first driving line of the driving lines; 
 a first transistor connected between the first node and a first sub-line among the sub-lines, wherein the first transistor includes a gate electrode connected to the first driving line; and 
 a second transistor connected between the first node and a second sub-line among the sub-lines, wherein the second transistor includes a gate electrode connected to the first driving line. 
 
     
     
       2. The input sensing device of  claim 1 , wherein the optical sensor includes:
 a photodiode connected between the power line and the first node; and 
 a transmission transistor connected between the photodiode and the first node, wherein the transmission transistor includes a gate electrode connected to the first driving line. 
 
     
     
       3. The input sensing device of  claim 1 , wherein the sub-lines extend in a first direction and are arranged along the first direction,
 wherein the second signal line is arranged parallel to the first signal line, and 
 wherein the driving lines extend in a second direction crossing the first direction and are arranged along the first direction. 
 
     
     
       4. The input sensing device of  claim 3 , wherein the second signal line is connected to each of the first sub-line and the second sub-line. 
     
     
       5. The input sensing device of  claim 3 , wherein a width of the second signal line is greater than a width of the first signal line. 
     
     
       6. The input sensing device of  claim 1 , further comprising:
 a first driver connected to the driving lines, wherein the first driver sequentially supplies the driving signal to the driving lines; and 
 a second driver connected to the second signal line. 
 
     
     
       7. The input sensing device of  claim 6 , wherein a sensor pixel farthest from the second driver among the sensor pixels, includes an optical sensor and only one transistor directly connected to the first signal line. 
     
     
       8. The input sensing device of  claim 6 , wherein a sensor pixel closest to the second driver among the sensor pixels, includes an optical sensor and only one transistor directly connected to the first signal line. 
     
     
       9. An input sensing device, comprising
 a power line; 
 a first driving line; 
 a first signal line including a first sub-line and a second sub-line; 
 a second signal line connected to the first sub-line and the second sub-line; 
 optical sensor connected between the power line and a first node; 
 a first transistor connected between the first node and the first sub-line; and 
 a second transistor connected between the first node and the second sub-line, 
 wherein a gate electrode of the first transistor is connected to the first driving line and a gate electrode of the second transistor is connected to the first driving line. 
 
     
     
       10. The input sensing device of  claim 9 , wherein the first node is directly connected to the first transistor and the second transistor. 
     
     
       11. The input sensing device of  claim 9 , wherein the first sub-line is electrically connected to the second sub-line by the first transistor and the second transistor. 
     
     
       12. An input sensing device, comprising:
 a power line; 
 a first driving line; 
 a first signal line including a first sub-line and a second sub-line; 
 a second signal line connected to the first sub-line and the second sub-line; 
 an optical sensor connected between the power line and a first node; 
 a first transistor connected between the first node and the first sub-line; and 
 a second transistor connected between the first node and the second sub-line, 
 wherein a width of the second signal line is greater than a width of the first signal line.